AT&T System 75, Wiring Diagram

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Patch Cord/Jumper Installation And Administration
7. Update system translations.
Installing and Removing Power Adapter Cords
The power adapter cords are installed as described previously in the
Adjunct Powering section of this chapter (Figure 4-8). The power
adapter cords can be used only with the 4-pair station circuit
terminal/connecting blocks. The telephone/voice terminal and adjunct
must be installed before installing the power adapter cord and patch
cord/jumper wire.
To remove a power adapter cord, proceed as follows:
1 .
2 .
3 .
4 .
5 .
6 .
On the Port Assignment Record (Figure 4-11), locate the station
jack number for the telephone/voice terminal receiving remote
power.
Unplug the power adapter cord at the power supply.
Locate the power adapter cord plug/leads on the 110-type terminal
block/66-type connecting block (blue field).
D i s c o n n e c t t h e p o w e r a d a p t e r c o r d / l e a d s f r o m t h e
terminal/connecting block.
Remove the power adapter cord from the patch cord troughs/187B1
backboards.
Update the Port Assignment Record.
Satellite Locations
The guidelines for installing and removing patch cords, jumper wires,
and power adapter cords at the equipment room cross-connect field
should be followed at a satellite location cross-conect field. The
cross-connects should be made between the white field (equipment
room side) and the blue field (station side).
1-Point Administration
For 1-point administration (Figure 4-12), the patch cords/jumper wires
are connected between purple field terminal/connecting blocks and
white field terminal/connecting blocks at the equipment room. The
patch cords/jumper wires are connected between identically numbered
4-23